Internal GPS Module - CarTFT.com

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Message ID $GPGSV GSV protocol header Total number of messages 1 3 Range 1 to 3 Message number 1 Satellites in view 12 1 Range 1 to 3 Satellite ID 28 Channel 1 (Range 01 to 32) Elevation 81 degrees Channel 1 (Range 00 to 90) Azimuth 285 degrees Channel 1 (Range 000 to 359) © 2006 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 � 886-2-8698-3699 �www.locosystech.com/ SNR (C/No) 42 dB-Hz Channel 1 (Range 00 to 99, null when not tracking) Satellite ID 20 Channel 4 (Range 01 to 32) Elevation 51 degrees Channel 4 (Range 00 to 90) Azimuth 077 degrees Channel 4 (Range 000 to 359) SNR (C/No) 46 dB-Hz Channel 4 (Range 00 to 99, null when not tracking) Checksum *73 End of message termination 1. Depending on the number of satellites tracked multiple messages of GSV data may be required. � RMC---Recommended Minimum Specific GNSS Data Table 5.1-9 contains the values for the following example: $GPRMC,053740.000,A,2503.6319,N,12136.0099,E,2.69,79.65,100106,,,A*53 Table 5.1-9 RMC Data Format Name Example Units Description Message ID $GPRMC RMC protocol header UTC Time 053740.000 hhmmss.sss Status A A=data valid or V=data not valid Latitude 2503.6319 ddmm.mmmm N/S Indicator N N=north or S=south Longitude 12136.0099 dddmm.mmmm E/W Indicator E E=east or W=west Speed over ground 2.69 knots True Course over ground 79.65 degrees Date 100106 ddmmyy Magnetic variation degrees Variation sense E=east or W=west (Not shown) Mode A A=autonomous, D=DGPS, E=DR Checksum *53 End of message termination Page 6/13
� VTG---Course Over Ground and Ground Speed Table 5.1-10 contains the values for the following example: $GPVTG,79.65,T,,M,2.69,N,5.0,K,A*38 Table 5.1-10 VTG Data Format Name Example Units Description Message ID $GPVTG VTG protocol header Course over ground 79.65 degrees Measured heading Reference T True Course over ground degrees Measured heading Reference M Magnetic Speed over ground 2.69 knots Measured speed Units N Knots Speed over ground 5.0 km/hr Measured speed Units K Kilometer per hour Mode A A=autonomous, D=DGPS, E=DR Checksum *38 End of message termination 5.2 Proprietary NMEA input message Please refer to ATHEROS proprietary message. © 2006 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 � 886-2-8698-3699 �www.locosystech.com/ Page 7/13
Page 1 and 2: © 2006 LOCOSYS Technology Inc. LOC
Page 3 and 4: 4 GPS receiver Chip ATHEROS AR1511
Page 5: Checksum *52 End of message termi
Page 9 and 10: 33 NC 34 GND P Ground 35 GND P Grou
Page 11 and 12: 8 Mechanical specification 8.1 Outl
Page 13: Document change list Revision 0.9

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